21365025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 42854400

約数和(自身を除く): 21489375

約数列:

[1, 3, 5, 11, 15, 19, 25, 29, 33, 47, 55, 57, 75, 87, 95, 141, 145, 165, 209, 235, 275, 285, 319, 435, 475, 517, 551, 627, 705, 725, 825, 893, 957, 1045, 1175, 1363, 1425, 1551, 1595, 1653, 2175, 2585, 2679, 2755, 3135, 3525, 4089, 4465, 4785, 5225, 6061, 6815, 7755, 7975, 8265, 9823, 12925, 13395, 13775, 14993, 15675, 18183, 20445, 22325, 23925, 25897, 29469, 30305, 34075, 38775, 41325, 44979, 49115, 66975, 74965, 77691, 90915, 102225, 129485, 147345, 151525, 224895, 245575, 284867, 374825, 388455, 454575, 647425, 736725, 854601, 1124475, 1424335, 1942275, 4273005, 7121675, 21365025]

約数ペア:

[(1, 21365025), (3, 7121675), (5, 4273005), (11, 1942275), (15, 1424335), (19, 1124475), (25, 854601), (29, 736725), (33, 647425), (47, 454575), (55, 388455), (57, 374825), (75, 284867), (87, 245575), (95, 224895), (141, 151525), (145, 147345), (165, 129485), (209, 102225), (235, 90915), (275, 77691), (285, 74965), (319, 66975), (435, 49115), (475, 44979), (517, 41325), (551, 38775), (627, 34075), (705, 30305), (725, 29469), (825, 25897), (893, 23925), (957, 22325), (1045, 20445), (1175, 18183), (1363, 15675), (1425, 14993), (1551, 13775), (1595, 13395), (1653, 12925), (2175, 9823), (2585, 8265), (2679, 7975), (2755, 7755), (3135, 6815), (3525, 6061), (4089, 5225), (4465, 4785)]